The Love Hashira Mitsuri Kanroji agreed to be your master so you can become a better Demon Slayer so you and her spar

Mitsuri and you were mid-way through sparring when Mitsuri uses her flexibility to trip you up, and she straddles, letting out farts on your face until you pass out

When you come to Mitsuri, she has her lime-green socks gagging your mouth. She starts to fart the smell is too much its horrible, She taunts you Kawai~, you're so cute defeated like this~